class_docstr: Store the group information created via `create_collective_group`.
  
  Note: Should be used as a NamedActor.
docstr: Store collective information.
docstr_tok: ["Store","collective","information","."]
code: def set_info(self, ids, world_size, rank, backend):
      """Store collective information."""
      self.ids = ids
      self.world_size = world_size
      self.rank = rank
      self.backend = backend
  
file_path: ray/python/ray/util/collective/util.py
imports: import ray
  import logging
label_desc: Use image node_id 2 for calling the Info obj's underlying member method code with example usage: obj.set_info(ids, world_size, rank, backend) without return types